Good day, how I can do these 3 things in the HELP section
1- add an explanation text in the English Language.
2- Translate it in another language.
3- disable or hide the button in the system.
The Help button displays help texts contained in the Help_en.php file.
Translations are to be found in the help.po files. For example, the locale/es_ES.utf8/LC_MESSAGES/help.po file for Spanish locale.
For more info about translations, head to https://gitlab.com/francoisjacquet/rosariosis/-/wikis/Localizing,-translate-RosarioSIS-with-Poedit
Finally, you can hide the button adding a CSS rule in your theme's stylesheet.css file.
Thank you @francoisjacquet